Synthesis of Crosslinked Polystyrene Microspheres

The monodisperse micron-size polystyrene particles were prepared by emulsifier-free emulsion polymerization.The effects of cross-linking agent kinds and cross-linking agent dosage on size of polystyrene particles,size distribution of polystyrene particles and solubility were investigated.The results show that the monodisperse micron-size polystyrene particles prepared with N,N'-Methylenebisacrylamide is sub-micron grade.The size of polystyrene microspheres decreases firstly and then increases with increasing dosage of cross-linking agent,the mondistribution index increases with increasing dosage of cross-linking agent.FT-IR contrastive analysis shows that the products are polystyrene particles microspheres.